, Volume 44, Issue 1–2, pp 143–150 | Cite as

Environmental correlations among grain yield and other important traits of wheat in drylands

  • A. Hadjichristodoulou


Environmental correlation coefficients were computed among all pairs of five traits, namely grain yield, heading date, number of tillers per m2, plant height and 1000-grain weight (grain size) using 30 Triticum durum and 30 Triticum aestivum varieties grown in 18 environments. Grain yield was significantly correlated with the other four traits in almost all of the varieties. The mean correlation coefficient over all varieties ranged from 0.58 to −0.83 for durum wheat and 0.66 to 0.88 for aestivum wheat. The correlation coefficients between heading date and the other traits were also significant, ranging from −0.45 to −0.79 in durum wheat and −0.61 to −0.85 in aestivum wheat. The correlation coefficient between number of tillers with plant height and 1000-grain weight were the smallest, 0.19−0.32 in durum wheat and 0.39−0.60 in aestivum wheat. It was concluded that agronomic practices favouring early and good stand establishment in the dry regions will favour the yield components and important adaptive traits, which contribute towards larger yields. Significant differences were found among genotypes in the environmental correlation coefficients and the associated changes in one trait as a result of changes in other traits.

Key words

Triticum aestivum wheat Triticum durum durum environmental correlations grain yield plant height tiller number grain size 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Daniels, R.W., M.B. Alcock & D.H. Scarisbrick, 1982. A reapraisal of stem reserve contribution to grain yield in spring barley (Hordeum vulgare L.). J. agric. Sci., Cambr. 98: 347–355.Google Scholar
  2. Darwinkel, A., B.A. Ten Hag & J. Kuizenga, 1977. Effect of sowing date and seed rate on crop development and grain production of winter wheat. Netherland J. of Agr. Sci. 25: 83–94.Google Scholar
  3. Falconer, D.S., 1960. Introduction to quantitative genetics. The Ronald Press Company, N. York, 365 p.Google Scholar
  4. Gallacher, J.N., P.V. Biscoe & R.K. Scott, 1975. Barley and its environment. B. Stability of grain weight. J. of Appl. Ecol. 12: 319–336.Google Scholar
  5. Hadjichristodoulou, A., 1982. The effects of annual precipitation and its distribution on grain yield of dryland cereals. J. of Agr. Sci. Cambr. 99: 261–270.Google Scholar
  6. Hadjichristodoulou, A., 1987. The effects of optimum heading date and its stability on yield and consistency of performance of barley and durum wheat in dry areas. J. of Agr. Sci. Cambr. 108: 599–608.Google Scholar
  7. Photiades, J. & A. Hadjichristodoulou, 1984. Sowing date, sowing depth, seed rate and row spacing of wheat and barley under dryland conditions. Field Crops Research 9: 151–162.CrossRefGoogle Scholar
  8. Scott, R.K. & Ruth Dennis-Jones, 1976. The physiological background of barley. J. of the Nat. Inst. of Agric. Bot. 14: 182–187.Google Scholar
  9. Storrier, R.R. 1975. Wheat nutrition. In: A. Lazenby & E.M. Matheson (Eds) Australian Field Crops, Vol. 1: Wheat and Other Temperature Cereals, 256–287. Angus and Robertson, London.Google Scholar

Copyright information

© Kluwer Academic Publishers 1989

Authors and Affiliations

  • A. Hadjichristodoulou
    • 1
  1. 1.Agricultural Research InstituteNicosiaCyprus

Personalised recommendations